Conservation of Mass in Chemical Reactions (ch 1.4)

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atom

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a small particle that is the building block of matter

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the prefix "a"

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means "not"

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the root "tom"

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means "cut"

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chemical equation

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a description of a chemical reaction using element symbols and chemical formulas

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the root "equ"

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means equal

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the suffix "-ic"

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means "of, like or pertaining to"

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the suffix "-al"

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means "of or related to"

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Law of Conservation of Mass

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the total mass of the reactants before the reaction is the same as the products after the reaction

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reactants

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are the starting materials in a chemical reaction

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products

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are what is formed after a reaction